Da

Da, DA, dA, DÄ and other variants may refer to:

Daylight saving time (abbreviated DST), sometimes referred to as daylight savings time in US, Canadian and Australian speech, and known as British Summer Time (BST) in the UK and just summer time in some countries, is the practice of advancing clocks during summer months so that evening daylight lasts longer, while sacrificing normal sunrise times.

Darth Vader, also known by his birth name Anakin Skywalker, is a fictional character in the Star Wars franchise.

David Robert Jones (8 January 1947 – 10 January 2016), known professionally as David Bowie (), was an English singer-songwriter and actor.

Damascus (; Arabic: دمشق‎ Dimashq [diˈmaʃq], Syrian: [dˈməʃe(ː)ʔ]) is the capital of the Syrian Arab Republic; it is likely also the country's largest city, following the decline in population of Aleppo due to the battle for the city.

Dallas () is a city in the U.S. state of Texas. It is the most populous city in the Dallas–Fort Worth metroplex, which is the fourth most populous metropolitan area in the United States.

The Day of the Dead (Spanish: Día de Muertos) is a Mexican holiday celebrated throughout Mexico, in particular the Central and South regions, and by people of Mexican ancestry living in other places, especially the United States.

A database is an organized collection of data. A relational database, more restrictively, is a collection of schemas, tables, queries, reports, views, and other elements.